System uncertainties estimation based adaptive robust backstepping control for DC DC buck converter

Mary, Ali Hussien; Miry, Abbas H.; Miry, Mohammed Hussein

doi:10.11591/ijece.v11i1.pp347-355

Cited by 3 publications

(7 citation statements)

References 18 publications

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“…Compared with the independent PWM control method, the complementary PWM method does not require the logic unit to perform transition switching between the BUCK and BOOST circuits, which improves the work efficiency and the system responds faster. From reference [10], the state-space averaging model of the circuit is as follows…”

Section: Microgrid Structurementioning

confidence: 99%

“…The negative impedance characteristics of the constant power load may cause the system to be unstable [8,9]. Reference [10] discussed the influence of a constant power load on the stability of a DC microgrid, and designed an RST digital feedback controller based on pole placement and sensitivity function shaping techniques. The controller is used to compensate for the oscillation effect of the constant power load and realize the voltage stability on the DC microgrid bus.…”

Section: Introductionmentioning

confidence: 99%

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Multivariable-Feedback Sliding-Mode Control of Bidirectional DC/DC Converter in DC Microgrid for Improved Stability with Dynamic Constant Power Load

2022

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In order to mitigate the influence of negative impedance characteristics on the stability of a DC microgrid with a constant power load, and the influence of nonlinear characteristics of a bidirectional converter on DC bus voltage, a control method of a bidirectional converter based on a multivariable-feedback sliding-mode control is proposed. The traditional control method usually uses the DC bus voltage error as a single controlled variable to optimize the design of the control law, which will lead to the lack of global coordination of each state variable. In this paper, the multi-state process variables-feedback sliding-mode control of a bidirectional DC/DC converter is designed, which can effectively improve the stability of the DC bus voltage, despite dynamic power disturbances. Firstly, the model of a bidirectional DC/DC converter, as well as the state equations of a converter with constant power load and resistive load, are analyzed. Secondly, to express various dynamic characteristics of the DC bus voltage fluctuation process, the output voltage error, the inductor current error and its integral are defined as the controlled state variables. Then, the multivariable weight combination-based sliding-mode surface is defined, and the sliding-mode controller is derived from a fast exponential power reaching law. Thirdly, the existence and stability of the multivariable-feedback sliding-mode control and the choice of control law parameters are discussed. Finally, MATLAB/Simulink software is used to simulate the proposed controller. Compared with PI and intelligent PID controllers, the proposed controller has the fastest response speed, the smallest steady-state voltage deviation and the best adjustment performance.

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Section: Microgrid Structurementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Multivariable-Feedback Sliding-Mode Control of Bidirectional DC/DC Converter in DC Microgrid for Improved Stability with Dynamic Constant Power Load

2022

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“…where v is a pseudo-control variable that stabilizes the variable . Following the methodology [33], we also introduce a candidate Lyapunov function for ( 28), (29) and we obtain…”

Section: The Synthesis Of Control Lawmentioning

confidence: 99%

“…Unfortunately, the procedure parameters are chosen most often heuristically or by trials and errors method search. Similar approach authors [29] used for control of DC-DC buck converter.…”

Section: Introductionmentioning

confidence: 99%

Stabilizing the spatial position of a quadrotor by the backstepping procedure

Kucherov

Kozub²,

Sushchenko

et al. 2021

IJEECS

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<div>The paper considers the problem of synthesizing a control law that stabilizes the spatial position of an airborne object. The control object is a quadrotor with nonlinear dynamics. To solve the stabilization problem, a mathematical model of the quadrotor has been developed, taking into account its positionin the Cartesian and Euler coordinate systems. The new control law has been synthesized using the backstepping procedure. This control law is based on the Lyapunov-type stabilization criterion. New results analysis of the quadrotor dynamics, where has been showing the dependence of the control accuracy on the parameter of the stabilization criterion also presented. An algorithm for the directed search of the procedure parameter also has been proposed. It ensures the desired quality of the transient process. Simulation results confirming the results of the oretical research have been presented as well.</div>

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“…Considering the inherent characteristics of the backstepping controller (BSC), it can be an appropriate control alternative for Buck converter operation. In addition, the BSC strategy can be applied directly since the state-space averaged model of the DC-DC converter can be represented in the strict-feedback form [29][30][31]. The systematic, step-by-step, and recursive control Lyapunov function (CLF) based controller design framework guarantees asymptotic error convergence in each of the subsystems, and ease in physical realisation is provided.…”

Section: Introductionmentioning

confidence: 99%

Adaptive backstepping controller design on Buck converter with a novel improved identification method

Saadat

Ghamari

Mollaee

2022

IET Control Theory & Appl

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An adaptive backstepping method is presented by this paper for a DC-DC Buck converter utilising a strategy for system identification with pulse width modulation in the presence of parametric uncertainties, load variations, and high variance noises. In this control structure, the system is assumed as a black-box block that can decrease the computational burden providing faster dynamics. An adaptive mechanism is adopted for the BSM using the Lyapunov definition, providing robust dynamics for the controller against various disturbances. In addition, a novel improved exponential recursive least-squares identification algorithm is proposed, which shows higher robustness in parametric estimations and can decrease the negative impact of disrupting factors on the estimator. Moreover, a particle swarm optimisation algorithm-based PID controller is designed to be compared with the proposed controller. Finally, the merits of the presented controller are validated for various working conditions through simulations and experiments. It can be seen that the adaptive backstepping method with the improved identification technique provides much better results with faster dynamics.

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System uncertainties estimation based adaptive robust backstepping control for DC DC buck converter

Cited by 3 publications

References 18 publications

Multivariable-Feedback Sliding-Mode Control of Bidirectional DC/DC Converter in DC Microgrid for Improved Stability with Dynamic Constant Power Load

Multivariable-Feedback Sliding-Mode Control of Bidirectional DC/DC Converter in DC Microgrid for Improved Stability with Dynamic Constant Power Load

Stabilizing the spatial position of a quadrotor by the backstepping procedure

Adaptive backstepping controller design on Buck converter with a novel improved identification method

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